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7.8

Microsoft Office Privilege Elevation Vulnerability

CVE-2026-26134
Summary

An attacker with authorized access to a system with Microsoft Office installed can potentially gain elevated privileges, allowing them to access sensitive files or settings. This could lead to unauthorized changes or data theft. Update Microsoft Office to the latest version to prevent exploitation.

What to do

No fix is available yet. Check with your software vendor for updates.

Affected software
VendorProductAffected versionsFix available
microsoft office <= 16.0.19822.20000 –
Original title
Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally.
Original description
Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally.
nvd CVSS3.1 7.8
Vulnerability type
CWE-190 Integer Overflow
CWE-416 Use After Free
Published: 10 Mar 2026 · Updated: 14 Mar 2026 · First seen: 11 Mar 2026